drivers/tee/optee/optee_private.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (c) 2018 Linaro Limited
 */

#ifndef __OPTEE_PRIVATE_H
#define __OPTEE_PRIVATE_H

#include <tee.h>
#include <log.h>
#include <memory_pool.h>

/**
 * struct optee_private - OP-TEE driver private data
 * @shm_pool:		shared memory pool
 * @rpmb_mmc:		mmc device for the RPMB partition
 * @rpmb_dev_id:	mmc device id matching @rpmb_mmc
 * @rpmb_original_part:	the previosly active partition on the mmc device,
 *			used to restore active the partition when the RPMB
 *			accesses are finished
 */
struct optee_private {
	struct memory_pool *shm_pool;
	struct mmc *rpmb_mmc;
	int rpmb_dev_id;
	int rpmb_original_part;
};

struct optee_msg_arg;

void optee_suppl_cmd(struct udevice *dev, struct tee_shm *shm_arg);

#ifdef CONFIG_SUPPORT_EMMC_RPMB
/**
 * optee_suppl_cmd_rpmb() - route RPMB frames to mmc
 * @dev:	device with the selected RPMB partition
 * @arg:	OP-TEE message holding the frames to transmit to the mmc
 *		and space for the response frames.
 *
 * Routes signed (MACed) RPMB frames from OP-TEE Secure OS to MMC and vice
 * versa to manipulate the RPMB partition.
 */
void optee_suppl_cmd_rpmb(struct udevice *dev, struct optee_msg_arg *arg);

/**
 * optee_suppl_rpmb_release() - release mmc device
 * @dev:	mmc device
 *
 * Releases the mmc device and restores the previously selected partition.
 */
void optee_suppl_rpmb_release(struct udevice *dev);
#else
static inline void optee_suppl_cmd_rpmb(struct udevice *dev,
					struct optee_msg_arg *arg)
{
	debug("OPTEE_MSG_RPC_CMD_RPMB not implemented\n");
	arg->ret = TEE_ERROR_NOT_IMPLEMENTED;
}

static inline void optee_suppl_rpmb_release(struct udevice *dev)
{
}
#endif

#ifdef CONFIG_OPTEE_RAW_PARTITION_IO

/**
 * optee_suppl_cmd_raw_io() - basic IO to a designated raw partition
 * @arg:	OP-TEE message holding the request details.
 */
void optee_suppl_cmd_raw_io(struct optee_msg_arg *arg);

#else

static inline void optee_suppl_cmd_raw_io(struct optee_msg_arg *arg)
{
	arg->ret = TEE_ERROR_NOT_IMPLEMENTED;
}

#endif  /* CONFIG_OPTEE_RAW_PARTITION_IO */

#endif /* __OPTEE_PRIVATE_H */